*Olive-Yellow XXX 23′′ — Olivine XXXII 35′′ _d_ Olympic Blue XX 47′ — Onion-skin Pink XXVIII 11′′ _b_ Ontario Violet XXXVI 55′′ _b_ Opaline Green VII 37 _f_ *Orange III 15 — *Orange Chrome II 11 — *Orange-Buff III 15 _d_ Orange-Cinnamon XXIX 13′′ — Orange-Citrine IV 19 _k_ Orange-Pink II 11 _f_ *Orange-Rufous II 11 _i_ Orange-Vinaceous XXVII 5′′ _b_ Orient Blue XXXIV 45′′ — Orient Pink II 9 _f_ Oriental Green XVIII 33′ — Oural Green XVIII 35′ _f_ Ox-blood Red I 1 _k_ Oxide Blue VIII 45 _i_ Pale Amaranth Pink XII 69 _f_ Pale Amparo Blue IX 51 _f_ Pale Amparo Purple XI 63 _f_ Pale Aniline Lilac XXXV 53′′ _f_ *Pale Blue (Ethyl Blue) VIII 45 _f_ Pale Blue-Green VII 39 _f_ Pale Blue-Violet X 55 _d_ Pale Bluish Lavender XXXVI 57′′ _f_ Pale Bluish Violet X 57 _d_ Pale Brownish Drab XLV 9′′′′ _d_ Pale Brownish Vinaceous XXXIX 5′′′ _f_ Pale Cadet Blue XXI 49′ _d_ Pale Campanula Blue XXIV 55* _f_ Pale Cendre Green VI 35 _f_ Pale Cerulean Blue VIII 45 _d_ Pale Chalcedony Yellow XVII 25′ _f_ Pale Cinnamon-Pink XXIX 13′′ _f_ Pale Congo Pink XXVIII 7′′ _f_ Pale Drab-Gray XLVI 17′′′′ _f_ Pale Dull Glaucous-Blue XLII 41′′′ _f_ Pale Dull Green-Yellow XVII 27′ _f_ Pale Ecru-Drab XLVI 13′′′′ _f_ Pale Flesh Color XIV 7′ _f_ Pale Fluorite Green XXXII 33′′ _f_